<clickhouse>
    <remote_servers>
        <test_cluster_internal_replication>
            <shard>
                <internal_replication>true</internal_replication>
                <replica>
                    <host>not_existing</host>
                    <port>9000</port>
                </replica>
            </shard>
        </test_cluster_internal_replication>

        <test_cluster_no_internal_replication>
            <node>
                <host>not_existing</host>
                <port>9000</port>
            </node>
        </test_cluster_no_internal_replication>
    </remote_servers>
</clickhouse>
